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Go to any jewelry store and peruse their pearl collections and it’s easy to see how many different colors of there are. You can find them in white, cream, pink, purple and black with overtones of green, brown and blue. While personal preference is the basis for deciding which color is best for you, it’s important to understand why pearls are the colors they are.
All pearls are made of nacre, or the substance oysters excrete to cover a nucleus in their tissue. The thickness of the nacre is the first thing that determines the color. The thicker the nacre, the richer the color. Environment does play a role in color variations, but the main factor in determining a pearl’s color is the type of mollusk that produced it. Different mollusks produce various colored pearls for different reasons.
Freshwater pearls are found in a wide variety of colors naturally. The colors are produced for many different reasons including environment, type of mussel and the location of the nucleus inserted into the tissue. Manganese is one element found only in freshwater mollusks and causes changes in the pearl’s color. The Manganese will darken freshwater pearls causing a silver-grey effect making a beautiful and unique colored gemstone.
Some of their colors, like that of the South Sea pearl, is based on the color of the oyster’s mantle tissue that it came from. The South Sea pearl is produced by the Pinctada maxima mollusk. There are two different variations of this mollusk – the silver lip and the gold lip. The silver lip creates white, silver and rose colored pearls while the gold lip produces yellow, gold and champagne colored pearls. The gold colored South Sea pearls are very rare and possibly the most valuable
Tahitian or black South Sea pearls have a rich, dark coloration. Tahitian pearls are produced by the Pinctada margaritifer mollusk. This mollusk is also known as the black lip oyster. The mantle of the black lip oyster is very dark which causes the pearls it produces to be black in color. Not only is the color of the mantle tissue a factor in what color the pearl will be but it also depends on the color of the donor tissue grafted into the oyster. Different donor tissues can cause the pearl to have lavender, green, blue and ‘peacock’ overtones. These types are highly prized for their luster and iridescence.
Even though cultured and natural pearls come in a wide variety of colors, pearls are sometimes dyed. A lot of times, freshwater and akoya pearls are dyed dark colors to give them the appearance of a Tahitian or South Sea pearl. The dyes are organic and don’t harm the stone but it is important to be aware of this when shopping for pearls. If the color of a pearl looks too beautiful to be true, it may be! A dyed pearl can be spotted by looking down the drill hole with a magnifier. The color of Tahitian pearls is even tampered with. Sometimes heat is used to alter their color and achieve a chocolate color which has become very popular in the jewelry world.
Piper Smith is the VP of Marketing for Museum Way Pearls, a leading provider of pearl jewelry such as Tahitian Pearl Necklaces and black pearl earrings. Museum Way Pearls can be found online at: MuseumWayPearls.com.
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Costmad TM 60x LED Microscope Jewellery Jeweller’s Currency Detector Pocket Compact Portable Magnifier Magnifying Loupe Glass Eye Lens Pieces with Illuminated LED Light and Free Black PVC Leather Pouch $7.99 This is not just your average magnifying loupe it has high magnifying power but It has two lights one which standard LED which can help to see clearly and can |
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